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25 paź 2020 · Dipole Antenna Defined: A dipole antenna is a type of RF antenna consisting of two identical conductive elements, operating effectively at half the wavelength of its frequency. Basic Design: The antenna’s simple structure—two rods connected in the middle—makes it a fundamental model for many other types of antennas.
Dipole antennas (or such designs derived from them, including the monopole) are used to feed more elaborate directional antennas such as a horn antenna, parabolic reflector, or corner reflector. Engineers analyze vertical (or other monopole) antennas on the basis of dipole antennas of which they are one half.
Antena dipolowa – najstarszy rodzaj anteny. Słowo dipol pochodzi z języka greckiego i oznacza układ dwubiegunowy. Antena dipolowa składa się przeważnie z dwóch symetrycznych ramion zasilanych za pomocą symetrycznej linii transmisyjnej.
Najprostszą konstrukcją jest dipol półfalowy składający się z kawałka kabla koncentrycznego (fidera) zakończonego z jednej strony wtykiem antenowym, a z drugiej dwiema rurkami lub drutami rozstawionymi pod kątem 180 stopni względem siebie.
Learn about dipole antenna, a type of RF antenna with two conductive elements that generate and receive radio signals. Find out the different types of dipole antennas, their characteristics, and their uses in wireless communication.
Using the basic expressions for radiation derived in Section 10.1, simple short dipole antennas are shown in Section 10.2 to have stable directional properties far from the antenna (the antenna far field), and different directional properties closer than ~λ/2π (the antenna near field).
A proper understanding of dipole properties and characteristics is essential to understanding many other antennas including complementary antennas such as slots. In this tutorial, Steve Stearns, K6OIK, explains the basic characteristics of dipoles for transmitting and receiving.
